Step 1: Removing Handle

-Ok, so lets get started. As you can see my saw was in pretty bad condition due to a long term exposure in a very humid areas. Furthermore, the handle was broken so we need to replace that with a 3d printed one.

- I firstly remove 3 screws, that were holding the handle in place and after that I measure it and started modeling a new one in a solidworks.

Step 2: Modeling

- A great trick when modeling a copy of any part is to take a picture of most detailed surface and trace the edges of a model in the picture so we can extrude it to a needed height. I also applied a few chamfers and made 3 holes for the screws.

- Moreover, a 1 mm groove was cut in the middle of the handle so we can fit in the saw blade.

- After that I just slice it and print it with my printer.

- The estimated print time was around 3 hours so in the mean time lets clean and polish our saw blade.

Step 3: Sanding / Polishing

- Firstly, I tried removing the rust with 200 grid sandpaper that did the job perfectly but there was still an unusual oxide layer on the saw blade, so I tried using a dremel tool but there were not much difference so the last idea that popped into my mind was to use a vibrating sanding machine.

- It removed most of the oxide layer, so we can finally polish it for a nicer look.